fix: move from devenv to nix flake

makefiles/docker.mk

makefiles/docman.mk

makefiles/git.mk

makefiles/gitignore.mk

makefiles/go.mk

makefiles/jsdoc-json.mk

makefiles/jsdoc.mk

makefiles/license-agpl3.mk

makefiles/license-all-rights-reserved.mk

makefiles/license-unlicensed.mk

makefiles/licenses.mk

makefiles/node.mk

makefiles/output.mk

makefiles/placeholder.mk

makefiles/readme-go-lib.mk

makefiles/readme-go-utilities.mk

makefiles/readme-platform-part.mk

makefiles/readme-standard.mk

makefiles/readme-webcomponents.mk

makefiles/reqman.mk